What is ISO 12003-2 - Rear-mounted ROPS about?
ISO 12003-2 discusses protective structures for narrow tractors. ISO 12003-2 specifies procedures for both the static and dynamic strength testing of roll-over protective structures (ROPS) rear-mounted on narrow tractors. ISO 12003-2 defines the clearance zone and acceptance conditions for rigid or tiltable, rear, two-post roll bar, frame, and cab ROPS, and is applicable to tractors so equipped having the following characteristics:
- A ground clearance of not more than 600 mm beneath the lowest points of the front- and rear-axle housings (not considering lower points on the axle differential)
- A fixed or adjustable minimum track width of one of the two axles of less than 1 150 mm and with the overall width of the other axle being less than that of the first axle, including where the two axles are fitted with rims and tyres of the same size
- A fixed driving position and a mass greater than 400 kg, unballasted, including the ROPS and tyres of the largest size recommended by the manufacturer
- A reversible driving position (reversible seat and steering wheel), with a mass greater than 400 kg, unballasted, including the ROPS and tyres of the largest size recommended by the manufacturer and maximum unballasted mass less than 3 500 kg and maximum permissible mass less than 5 250 kg
- A mass ratio less than 1,75
- A ROPS of the rollbar, frame or cab type, mounted partly or entirely behind the seat index point and having a zone of clearance whose upper limit is (810 + av) mm above the seat index point in order to provide a sufficiently large area or unobstructed space for the protection of the driver
ISO 12003-2 also specifies optional testing procedures for both seat anchorage points and folding efforts of rear-mounted ROPS designed to fold.
Who is ISO 12003-2 - Rear-mounted ROPS for?
ISO 12003-2 on rear-mounted ROPS is useful for:
- Manufacturers of tractors and tractor components
- Product development engineers
- Quality control personnel
Why should you use ISO 12003-2 - Rear-mounted ROPS?
Testing of ROPS for narrow tractors minimizes the probability of driver injury from the accidental overturning of the tractor. ROPS strength is tested by applying static or dynamic impact loads to simulate actual loads.
ISO 12003-2 provides you with guidance on test apparatus and equipment for dynamic and static testing, ROPS deflection, seat index point, clearance zone, tolerances, acceptance conditions and seatbelt anchorage test which ensure the safety and structural integrity of the ROPS.
ISO 12003-2 provides you with detailed testing observations for rear-mounted ROPS. These tests are conducted in simulated environments in which loads are imposed on the protective structure when the tractor overturns.
ISO 12003-2 guidelines enable you to ensure the safety of tractors and drivers with rear-mounted ROPS while driving on inclined planes or in cases of overturning.
What’s changed since the last update?
BS ISO 12003-2:2021 supersedes ISO 12003-2:2008, which is withdrawn. BS ISO 12003-2:2021 includes some technical and editorial changes with respect to ISO 12003-2:2008.
These include:
- Seat anchorage test procedures of OECD in ISO 12003 have been added as optional testing and Seat position during the test has been updated to include seats with adjustable rearrest
- Tractor mass limits for unballasted tractors have been specified the allowable mass ratio (1,75) has been specified
- Tractor lashings method of lashing has been changed reference mass limits have been added
- Figure 17 has been updated to be harmonised with OECD Code 6; specifically, a new key “g” has been added to indicate failure at any stage when load drops below 0,8Fmax
- Reversible seat operator seat zones have been updated to harmonize with OECD code 7
